Earbud



FIG. 1 is a perspective view of an earbud as seen from the left side and front, “left” being from the observer's point of view, and “front” being towards the observer, the opposite earbud is a mirror image;

FIG. 2 is front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top end view thereof; and,

FIG. 7 is a bottom end view thereof.

The dotted line portions of the drawings represent environmental structure only and do not form part of the claimed design. 

CLAIM The ornamental design for an earbud, substantially as shown and described. 